Chemistry
Chemistry, 24.07.2021 07:00, 123abc321cbaabc

Xác định xem các chất sau có phải là nguyên tố nguyên chất, hợp chất nguyên chất, đồng đẳng không hỗn hợp, hoặc hỗn hợp không đồng nhất. một. Hỗn hợp các loại hạt
hai. Khí hydro

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